Alexa "Lex" Woods was an environmental technician who took part in a Weyland Industries expedition to Bouvetøya, Antarctica in 2004 to investigate an ancient Pyramid buried beneath the ice there. The Pyramid was discovered to be a Yautja temple and hunting ground where the Predators would breed Xenomorphs for use in their Hunts, and the expedition soon became caught up in the battle between the two species.

Lex was the sole survivor of the incident, notably earning the respect of one of the Yautja in the Pyramid, Scar, forming something of an alliance with the creature and helping to defeat the Xenomorph Queen.

Contents

Lex was an explorer and environmentalist, most famous for being the youngest woman to climb Mount Everest without any oxygen. She split her time between working for an environmental protection group and guiding private parties on mountain climbing expeditions

While she was climbing the Lho La Icefall in Nepal, Lex received a call from Max Stafford, who made an offer to her to join Weyland Industries in the exploration of the pyramid discovered in Antarctica. She would have until tomorrow to decide, which would have been a problem for Lex, since it would take her a week to get back to the world. Stafford was in fact waiting for her at the summit of the icefall, since Weyland apparently didn't have a week. When she was on board the boat bound for Antarctica, she insisted on taking the proper time to train the rest of the crew, which Weyland didn't have either. She was initially going to quit, but had a change of heart, and instead laid down some rules for the crew to follow. Before beginning the climb down an already-been-made tunnel, Lex noticed Weyland suffering a severe cold, having to use an inhaler to ease his breathing. She insisted that he stay on the surface, but Weyland refused, wanting to make his place in history before he died. After they made their way down, and discovered the pyramid, Lex congratulated Weyland for his discovery.

Upon making their way into the Pyramid, they discovered the Sacrificial Chamber. Lex, along with half of the team moved on to the lower level, where they discovered a sarcophagus, which holds three plasma cannons used by the three chosen ones (the Predators). They took the weapons and stored them in their backpacks. That was when they heard screams of agony above them, in the sacrificial chamber. Lex ordered everyone to get back on to the boat, but the mercenaries, having been carrying guns in their "storage cases", decided other wise. Not seeing the guns as a threat, Lex still ordered everyone to do what she says and get back to the boat, since that is her job until everyone is back on the boat safely. Before they could, the pyramid started changing shape, causing most of the team to become separated. They were ambushed by the Predators, and Lex was the first to challenge one of them by trying to take a climbing axe to their second-in-command, Chopper, who, with his cloaking device still active, disarmed Lex by kicking her and sending her flying into a nearby relic, and was about to kill her with his wrist blade, until he was impaled by the tail of Grid, and killed when Grid ripped open his head with his jaws.

Lex, Sebastian, and Weyland were about to retreat, until Weyland could not go any further since his breathing was getting worse. He ordered them to go on without him, so he could stall Scar long enough to give them time to escape. After Sebastian discovered the history behind the Aliens and the Predators being on Earth, they agreed to return the only remaining plasma cannon to Scar, since he would be the only one who could stop the Aliens from reaching the surface. After Lex and Sebastian were being pursued by a nearby Xenomorph, they jumped over a cliff. Sebastian made it across, but Lex was about to fall off, so Sebastian had to come to her aid and grab her before she fell. Grid showed up, dragged Sebastian off, and to the hive. Lex was able to climb back up, but found she was alone. That was when Scar found her, and was about to impale her with his spear, until she implored him not to, and gave him his plasma cannon. Another alien attacked, causing Scar to drop his spear. It saw Lex and jumped for her, who grabbed Scar's spear and impaled the Alien with it.

Finding the Xenomorph threat was becoming uncontrollable, Scar and Lex became allies, and Scar made a protective shield out of the decapitated head of the Alien Lex killed, since it's skin is the only kind of material that does not react to the potent acid that the Xenomorph have for blood, and then used it's harpoon-like tail and tied it to a pole to make a spear, both being weapons for Lex. They made their way into the hive, where Lex found Sebastian having been cocooned. She wanted to help him, but it was too late, since "it" was already inside Sebastian, who begged her to kill him. Scar was about to do it himself, having scanned the inside of Sebastian and found the chestburster moments away from erupting from his chest. She demanded that Scar let her help him, and so he did. She took a gun she found earlier, and reluctantly shot Sebastian in the head, moments before the chestburster erupted. With thousands of eggs being laid all over the hive, Scar had no choice but to use his self-destruct device to destroy the entire pyramid. He activated the countdown timer, and after throwing it into the middle of the hive, he and Lex ran for the tunnel that leads to the surface. Before they could jump onto the sled that is set to pull them up to the surface, they were ambushed by another Xenomorph, which attacked Scar. Lex found a drilling gun, aimed it at the alien, and fired, blowing the back of its head wide open (and even said Schaefer's classic Predator line). They jumped onto the sled, moments before it began ascending. After a narrow escape from the explosion that consumed the pyramid and most of Sector 14, Scar branded Lex with the mark of a warrior, having witnessed her kill two Aliens.

The Alien Queen, having evaded the explosion, dug her way out of the snow, and found Lex and Scar. Furious at Scar for killing her babies, she struck him with her tail, causing him to fall a distance away. She was about to kill him by impaling him with her tail, until Lex stabbed her in the throat with her spear. She made a run for a nearby water tower, and was cornered, where the Queen was about to kill her, until Scar leaped into the air and drove his spear into her throat. This gave Lex and Scar enough time to tie the Queen's chain, which had remained on even after her escape from the pyramid, to a pipe that connected to the water tower. Unfortunately, this also gave the Queen the mere moment she needed to impale Scar with her tail. Lex used a shovel to break the water tower free, which fell into a nearby pit of water, dragging the queen in along with it. Lex sat by Scar's side, grieving for him moments before he succumbed to his wounds. A Predator Elder and his ship uncloaked, and his troops gathered up their fallen comrade. Before he departed, he gave Lex the retractable spear as a sign of respect, noticing the mark of a warrior which had been branded on her cheek. After the ship departed, Lex went back to the cargo tractors to make her way back to the Weyland icebreaker ship.

In terms of human equipment, Lex used an ice axe to scale the Khumbu Icefall and later used it to pin Weyland inside the ice tunnel. When the Predators ambushed the group inside the Pyramid, she attempted to attack them with the axe, but was disarmed by Chopper. Later, inside the sacrificial chamber, she briefly used the only round left in a Desert Eagle to euthanize Sebastian. As Scar and Lex were attempting to escape the Pyramid via the ice tunnel, Lex used piton gun to kill an Alien attacking the Yautja.

In terms of Yautja equipment, Lex briefly used Scar's Combi-Stick after he dropped it, using it to impale an Alien. Afterwards, Scar crafted a makeshift Combi-Stick made from an Xenomorph's tail, and a shield made from an Xenomorph's dome for her. She carried the makeshift gear until the two made it to the surface, but lost it during the fight against the Queen. After the fight, the Ancient Predator, noticing she had his clan's mark, gifted her with his custom Combi-Stick.

Lex shared some similarities to Machiko Noguchi, who centuries later would also be caught in between a Yautja hunt with xenomorphs. Machiko was also branded with the mark of a warrior after teaming up with Dachande and proving her worth. Unlike Lex, Machiko then left with the Yautja, became a part of the culture, and became a hunter herself.